Comparative Study of TMD in Young Population between USA and Japan

*1458 Comparative Study of TMD in Young Population between USA and Japan*
H. KARIBE¹, G. GODDARD², and C. MCNEILL², ¹ Nippon Dental University Hospital, Tokyo, Japan, ² University of California, San Francisco, USA There are no previous studies comparing Temporomandibular Disorders (TMD) in children and young adults between Western and Eastern countries. Objectives: The purpose of this study was to assess chief complaints, diagnoses, treatments and outcome in young TMD patients and to compare them between USA and Japan. Methods: Sixty-four TMD patients (46 females, 18 males; 16.3 ą 2.5 years) at the University of California San Francisco Center for Orofacial Pain and 25 TMD patients (17 females, 8 males; 14.5 ą 5.1years) at the Nippon Dental University Hospital pediatric dental clinic were selected. All of the patients received a comprehensive examination including the RDC/TMD and assessed by using standardized examination and outcome forms (English or Japanese). An outcome form was consisted of 5 pain ratings (0-10 scale) in orofacial region and 7 daily living activity ratings (0-10 scale). The outcomes were analyzed by a change of pain ratings and activity ratings before and after treatment. Chi-square and Mann-Whitney's statistics were utilized for comparisons. Results: Gender ratio, ages, chief complaints and diagnoses were not significantly different between USA and Japan. Most common diagnosis of young TMD patients was disc disorder; USA (66%) and Japan (76%), and second common was myofascial pain; USA (66%) and Japan (56%). Percentages of various treatments were significantly different between two clinics (P<0.0001), but all of the treatments completed at both clinics were conservative. Medications tended to be used for TMD patients more in USA (57%) than in Japan (4%). However, percentage of patients who received better outcome was not significantly different between USA (78.3%) and Japan (70.6%). Conclusions: These results suggest that diagnoses of TMD in a young population are not different between these two countries, and even if treatment for TMD is different between them, conservative treatments for young TMD patients can result in a good outcome.
Seq #183 - TMD - Epidemiology, Diagnosis, Pathophysiology, and Treatment 3:45 PM-5:00 PM, Friday, 14 March 2003 Henry B. Gonzalez Convention Center Exhibit Hall C
Back to the Neuroscience / TMJ Program Back to the 32nd Annual Meeting and Exhibition of the AADR (March 12-15, 2003)
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